#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main(int argc,char * argv[])
{
    if(argc != 2)
    {
        printf("can not execute!\n");
        exit(1);
    }

    printf("获取环境变量：SSH_VAL:%s\n",getenv("SSH_VAL"));

    if(strcmp(argv[1],"-a") == 0)
    {
        printf("hello a!\n");
    }
    else if(strcmp(argv[1],"-b") == 0)
    {
        printf("hello b!\n");
    }
    else 
    {
        printf("default!\n");
    }

    return 0;
}
